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Rev. 0.4 06/02

Copyright © 2002 by Silicon Laboratories

Si5321-EVB-04

S i 5 3 2 1 - E V B

E

V A L U A T I O N

 B

O A R D

 

F O R

 

T H E

  S i 5 3 2 1   S O N E T / S D H   P

R E C I S I O N

 

C

L O C K

  M

U L T I P L I E R

  I C

Description

The Si5321-EVB is the customer evaluation board for
the Si5321 SONET/SDH Precision Port Card Clock IC.
This board is supplied to customers for evaluation of the
Si5321 device. The board provides access to signals
associated with normal operation of the device and
signals that are reserved for factory testing purposes. 

Features

Single supply at either 3.3 or 2.5 V (jumper 
configurable)

Differential I/Os ac coupled on board

Differential inputs terminated on board

Control input signals are switch configurable

Status outputs brought out to headers for easy 
access.

Function Block Diagram

t
e
x
t

t
e
x
t

Si5321

+

+

CLKIN

CLKOUT

Control

Inputs

Status

Outputs

Control

Input

Jumper
Header

Status
Output
Signal

Header

Factory

Test

Input

Header

Factory

Test

Output

Header

Factory

Test

Serial

Input

Factory

Test

Serial

Output

Pow er

Supply

Input

3.3 V/2.5 V

Supply

Selection

Factory

Test

Analog

Output

CLKIN

CLKOUT

50 

50 

3.3 V or 2.5 V

Supply

Summary of Contents for Si5321-EVB

Page 1: ...erved for factory testing purposes Features Single supply at either 3 3 or 2 5 V jumper configurable Differential I Os ac coupled on board Differential inputs terminated on board Control input signals are switch configurable Status outputs brought out to headers for easy access Function Block Diagram t e x t t e x t Si5321 CLKIN CLKOUT Control Inputs Status Outputs Control Input Jumper Header Stat...

Page 2: ...and has an on chip pulldown mechanism This pin must be set high for normal operation of the Si5321 device Setting RSTN CAL low forces the Si5321 into the reset state A low to high transition of RSTN CAL enables the part and initiates a self calibration sequence The Si5321 device initiates self calibration at powerup if the RSTN CAL signal is held high A self calibration of the device also can be m...

Page 3: ...node is 15 s to 50 s The capacitor used on the board is a 33 F capacitor with an ESR of 8 This yields a time constant of 26 4 s The designer could decide to use a 330 F capacitor with an ESR of 15 This yields a time constant of 49 5 s Each of these cases provide a compensation circuit that makes the output of the regulator stable The second issue is noise filtering For this more capacitance is usu...

Page 4: ...V_ID 4 NC DEV_ID 5 NC DEV_ID 0 NC DEV_ID 1 NC DEV_ID 2 NC ANAOUT FXDDELAY FRQSEL 2 FEC 2 RES TMOD 0 RES TMOD 1 RES TMOD 2 BWBOOST GND GND GND GND GND GND GND GND GND GND GND GND GND GND CLKIN CLKIN INFRQSEL 0 INFRQSEL 1 INFRQSEL 2 FRQSEL 0 FRQSEL 1 FEC 0 FEC 1 BWSEL 0 BWSEL 1 VALTIME RSTN CAL VSEL33 REXT R9 4 99k 0603 D2 LN1274R R3 49 9 0603 JP6 HEADER 3x2 1 2 3 4 5 6 1 2 3 4 5 6 R8 4 99k 0402 C6 ...

Page 5: ...JP1 14x3 HEADER JP2 JP4 JP5 1x3 HEADER JP3 1x2 HEADER JP6 HEADER 3x2 JP7 5x3 JP8 7x2 Header J1 J2 J3 J4 SMA notch fit Johnson Components 82 SMA S50 0 45 J5 power connector 2 pin Phoenix Contact 140 A 111 02 1729018 L1 600 ohm 1206 MURATA BLM31A601S Q1 Q2 MOS SM FDN337N Fairchild FDN337N R1 0 0603 Venkel CR0603 16W 000T R3 R2 49 9 0603 Venkel CR0603 16W 49R9FT R4 R5 R10 0 0402 Venkel CR0402 16W 000...

Page 6: ...Si5321 EVB 6 Rev 0 4 Figure 2 Si5321 EVB Top Silkscreen ...

Page 7: ...Si5321 EVB Rev 0 4 7 Figure 3 Si5321 EVB Layer 1 Component Side ...

Page 8: ...Si5321 EVB 8 Rev 0 4 Figure 4 Si5321 EVB Layer 2 High Speed Signals ...

Page 9: ...Si5321 EVB Rev 0 4 9 Figure 5 Si5321 EVB Layer 3 GND ...

Page 10: ...Si5321 EVB 10 Rev 0 4 Figure 6 Si5321 EVB Layer 4 VDD 2 5 ...

Page 11: ...Si5321 EVB Rev 0 4 11 Figure 7 Si5321 EVB Layer 5 GND ...

Page 12: ...Si5321 EVB 12 Rev 0 4 Figure 8 Si5321 EVB Layer 6 VDD 3 3 ...

Page 13: ...Si5321 EVB Rev 0 4 13 Figure 9 Si5321 EVB Layer 7 GND ...

Page 14: ...Si5321 EVB 14 Rev 0 4 Figure 10 Si5321 EVB Layer 8 Bottom ...

Page 15: ...Si5321 EVB Rev 0 4 15 Figure 11 Si5321 EVB Bottom Silkscreen ...

Page 16: ... List Revision 0 1 to Revision 0 4 Updated to reflect Rev D printed circuit boards Default jumper settings added Evaluation Board Assembly Revision History Assembly Level PCB Rev Si5321 Rev Assembly Notes B 01 Rev C Rev B Assemble per BOM rev B 01 ...

Page 17: ...Si5321 EVB Rev 0 4 17 Notes ...

Page 18: ...th which if it fails can be reasonably expected to result in significant personal injury or death Silicon Laboratories products are generally not intended for military applications Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including but not limited to nuclear biological or chemical weapons or missiles capable of delivering such weapons Tradem...

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